Promyxobacteriaceae
原粘桿菌科
??? 情景例句
Some think that all's fair in business.
一些人以為商界的一切都是公平的。
Who is he?
他是誰？
Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back.
大家都知道，在墻壁或山腰附近發(fā)出的喊聲，就會聽到回聲。